package com.bieber.democamp.sharesession.filter;

import com.bieber.democamp.sharesession.session.Session;
import com.bieber.democamp.sharesession.session.SessionManager;
import com.bieber.democamp.sharesession.session.redis.RedisSessionManager;

import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * Created by bieber on 2015/3/16.
 */
public class CheckLoginFilter implements Filter {

    private SessionManager manager = new RedisSessionManager();
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        HttpServletRequest req = (HttpServletRequest) request;
        HttpServletResponse rep = (HttpServletResponse) response;
        Session session = manager.getSession(req,false);
        if(session==null){//未登录
            rep.sendRedirect("/");
        }else{//已经登录
            chain.doFilter(request,response);
        }
    }

    @Override
    public void destroy() {

    }
}
